Pulling-over machine



Feb. 4, 1930. A. NEUBERT PULLIN'G; ovsa momma Filed May 12, 1927 2 Sheets-Sheet l I Patented Feb. 4, .1930

UNITED STATE PATENT OFFICE ,AUGUgimNEUBERT, OF wEIssEivFELs-on-TnE-sAALE, GERMANY, ASSIGNOR To. NOLL- ESCHE WERKE, KOMMANDIT' GESELLSCHAFT, or wEIssENrELs-o v-THE-sAALE,

GERMANY.

, PULLING-OVER MACHINE Application filed May 12, 1927,5e1ia1 No. 190,840, and in Germany March 25, 1926.

This invention relates to machines for pulli-ng boot and shoe uppers over lasts.

The machine in which the invention is herein shown as embodied comprises, among other mechanisms, a last support, a plurality of pincers for gripping the upper and pulling it over the last at its toe portion, and side pincers for gripping the upper and pulling it over the last at its side portions.

The improvements contemplated by this invention have for their objects to cause the side pincers to perform their functions better and to cooperate more perfectly in the operation of the machine as a whole.

The chief feature of the invention consists in providing means for adjusting the sidepincers vertically with respect to the shoe-.

support and angularly with respect to the longitudinal axis of this support independently from the toe-pincers.

By the pullin -over operation the upper is stretched at a few points and tacked to the last so that it may then be fastened at the other points of the margin by the lasting machine without being displaced upon the last. To this separating of the pulling-over and lasting operations is due in a great measure the possibility of mass manufacturing of shoes.

I upper at the other points as hitherto practised longitudinal axis of the shoe.- But as the upper has already been fastened at the ball during the pulling-over operation the lasting of these parts effects only a distortion of the structure of the leather which appears in the forms of folds when the shoe is worn. The invention is intended to obviate this drawback.

Nevertheless, it must be stated that. the pulling-over and final fastening of the upper at a few points before stretching the To this end the loose upper to be pulled over 1S stretched and laid over not only at the toe of the shoe, but at the same time also between the j oint'and the ball. By stretching the upper between the joint and the ball it is possible properly to set the upper during the. pullingover operation without thedanger of the upper becoming distorted during the following lasting operation. Besides the usual pincers at the toe of the shoe in the front of the ball, there are arranged pincers between the ball and the joint which are adjustable in vertical and angular directions independently of the toe pincers and which may be actuated independently of but simultaneously with the toe pincers. It is of course not new to provide several pincers in pulling-over machines. But the object of the present invention is, the special arrangement of-the pincers behind the ball and their cooperation with the other pincers.

The subject of the invention is shown in the drawing in one embodiment by way of example.

Figure 1 is a plan View of the machine.

Figure 2 is a partial front View of the same.

Figure 3 is a partial plan view of the driving parts of the pincers.

Figure 4 illustrates a shoe pulled over with the new machine.

The pincers 1 may be of any construction. In the present instance the construction is used which is described in the, U. S. Patent Letters Nos. 1,110,170 and 1,110,171. The pincers 1 are movable up and down in the pincer bodies 3,0 and can be moved along the shoe for proper positioning of the-upper and for adjustment, and across the shoe for overlaying of the margin of the upper. The

Y pincer body is carried by a ball joint 6 on a horizontally movable slide 8. This slide is guided in the frame 11 and is provided with a rack 7 which, meshes with a pinion'lO which may be turned by means of the hand wheel 15. The slide '8 is connected by the ball joint 9 with the three armed hand lever 2 rotatable on the axis 3.. By means of this lever and the double ball joint 4, 5 the pincer c osed and-depressed. .A spring 22 arin the vertical slide 14' which may be fixed ranged on the bolt 8 of the slide 8 tends to keep the whole pincer body in the initial position shown. This initial position is adjusted as may be required by the hand wheel 15 and is limited by the head 35 of the bolt 8. The'frame 11 is adapted to swing with its shaft 12. The shaft 12 is connected by bevel gears with the shaft 31 which is journaled in the arm 32 can be turned by the hand wheel 15. By these means the pincer body 30 can be adjusted in a vertical direction. The plate 13 forms a support for the said horizontal shaft 12, the plate 13 itself being adapted to be turned about and to be fixed on the shaft 33. The shaft 33 is arranged in the desired height on the dovetail guide 18 ofthe machine frame. On the shafts 25 of the machine frame there are borne the two armed levers 20 coacting at their lower ends with the cam disc 19' of the driving shaft 34- and engaging with a toothed segment 36 at their upper ends in a rack on the horizontally movable slide 21. The head of the slide 8 mentioned above abuts against a cylindrical surface 37 of the slide 21. By

these means the pincers are moved inwards by the machine shaft, while the outwardmovement is effected by the springs 22. The nailing is effected in the manner described in the U. S. Patents Nos. 1,110,170 and 1,110,171

automatically by throwing up of the hammer bars 27.

By means of the hand wheels 15 the pincers are approached or removed horizontally from the edge of the last according to the size and to the form of the shoe. The coarse adjustment in the Vertical direction can be effected on the dovetail guide 18 and the fine adjustment by means of the hand wheels 15. The angular adjustment is effected by when Worn.

What I claim is:

' In a pulling-over machine, a plurality of toe pincers, side-pincers, a support adapted to carry a shoe to be worked upon by the pincers, means for closing the plncers, means for adj ustlng' and means for moving the pincers vertically with respect to the shoe-sole,

automatic means for moving and means for adjusting the side-pincers across the shoe sole, and hand operated means for ad usting the individual side-pincers angularly to the median line of the shoe-sole.

In testimony whereof I affix my signature.

AUGUST NEUBERT.

turning and clamping of the whole pincer I device and the vertical shafts 33.

After the adjustment described the shoe is placed upon the support 38 and the operation can begin. At first the upper'is gripped and stretched by the toe pincers 28. Thereupon the pincers 23 and 24 are operated by a treadle. At the same time, however, the

attendant grasps the hand levers 22 and by moving these levers and the treadle he isenabled properly and uniformly to stretch the upper behind andin the front of theball. The treadle is automatically locked in its lowest position so that now by means of ana othertreadle the machine drive may be coupled. The lnward movement of the pin- From the above it is to be seen that the mach ne is adapted to work properly upon the very different forms of shoe between the ball and the joint. By the proper adjustment of the pincers behind the ball the upper is stretched and properly fixed just at the 

